In the 1800s, a stormy love relationship develops quickly between a young medical student and a woman believing herself to be the daughter of his scientist uncle, the student having never heard of her before their chance encounter and both unaware that she is the result of the scientist's illegal experiments with artificial insemination..
The stenotypist Margit is supposed to take 3,000 Marks to the bank for her boss, Mr. Plaumann, but she lazes away the time window-shopping, and eventually stands before a closed door. She follows Plaumann to Dresden, where he, believing the money is deposited in a bank as a down payment, wants to purchase a newfangled remote control from the inventor Lambach. Since Plaumann’s car breaks down on the road, Margit arrives before him and rests in the seemingly empty hotel room which later turns out to be Lambach’s. Meanwhile, Lambach himself is being spied on by the jealous cousin of his fiancée, who can’t wait to catch him in the act…
A series of stupid coincidences causes the young Munich painter Paul to convert his uncle's castle into a hotel for four weeks. But he can't complain: business is good and he has plenty of guests. For exmple, there's Theo Muller with his revue troupe. For reasons of "sound", Muller calls himself "Miller", which, of course, causes more confusion. His daughter, the beautiful Evelyn, is confused with Mabel Miller, who has come to the hotel on a mission for her filthy rich father ... namely, to estimate the worth of the castle.
Due to an intrigue spun by his grandmother and two cousins, the engagement between the officer Hans and his fiancée Traute breaks up. His fiancée is said to have been unfaithful during his 4-week absence on official business. The fabricated rumors allege an affair between Traute and Oberleutnant Grobitzsch.
Based on a story by Michel Linsky, "Adieu, Mascotte" revolves around an artist's model named Mascotte (Harvey) who ekes out a hand-to-mouth existence in the Parisian art colony. In dire need of money to finance a friend's operation, Mascotte auctions herself off at an artist's ball. She is "bought" by a novelist named Jean (Igo Sym), who merely wants to teach his flirtatious wife a lesson. Discreetly keeping his distance, Jean persuades Mascotte to pose as his mistress so that his wife will become jealous and return to his arms. Of course, things don't go as planned.
When a travelling troupe threatens to unleash a saucy Berlin revue on the provincial town of Emilsburg, the local Morality Society, a band of sanctimonious middle-aged men, stages a protest. Meanwhile, the reigning monarch is concerned that his son and heir is not living his life to the full. Ninon d’Hauteville, a showgirl and the revue’s star attraction, takes a job as piano teacher to the young prince after her engagement at the local theatre was brought to a premature end, a result of the Morality Society’s interference. It doesn’t take long for those hypocrites to get wind of this. While on the outside they appear to be concerned with running the immoral woman out of their town, behind closed doors they rank among the new piano teacher’s most ardent pupils. However, Ninon, out to right the wrong done against her, secretly keeps a “diary” of their visits, recording each encounter on film with a hidden camera.
Heinrich Zentler is a successful man, both on football and in his legal career.